Carbureter



W. J. BRANDON.

CARBURETER. APPLICATION FILED JUNE I0, 1913. RENEWED MAR. 15,1920.

1 ,362,389 Patented Dec. 14 1mm.

WW -Q Mk W ebb 141211;

UNHTEQ STATES PATENT FENCE.

WILLIAM J BRANDON, OF PEORIA, ILLINOIS, ASSIGNOR TO AVERY COMPANY, OF PEORIA, ILLINOIS, A CORPORATION OF ILLINOIS.

CARBURETER.

Application filed June 10, 1913, Serial No. 772,891. Renewed March 15, 1920. Serial No. 366,043.

To all whom it may concern:

Be it known that I, WILLIAM J. BRANDON, a citizen of the United States, residing at Peoria, in the county of Peoria and State of Illinois, have invented certain new and useful Improvements in Carbureters, of which the following is a specification, reference being had therein to the accompanying drawing.

This invention relates to .improvements in liquid fuel atomizing mechanisms of the class commonly known as carbureters. Mechanisms embodying my .invention are primarily intended for use in connection devices inclosed in a single set of castings and so arranged that vapor from either set can, at the option of the operator, be delivered to the engine. A further object of the invention is to provide in combination with a mechanismhaving the parts arranged as above described, means for delivering water or water vapor to the atomizing devices for the kerosene. Other objects will be apparent from the following specification.

I am aware that it has been heretofore proposed to provide vaporizing mechanisms so constructed that either of two fuels can be fed at will; and I am also aware that it has been heretofore proposed to provide two structurally separate carbureter mechanisms connected together by independent pipe fitting, or similar parts, so that either carbureter can be connected to deliver vaporized fuel to an engine. I am aware that it has been proposed, in connection with mechanisms such as that last described, to

provide means for delivering water to the kerosene carbureter. I do not therefore claim any of these matters broadly.

In the accompanying drawings 1 have illustrated one form of my inventlon, but

it will be understood that various changes and modifications may be made within'the scope of the appended claims.

Of the drawings,

Figure 1 is a side View partly in section and partly in elevation of a mechanism embodying my invention.

Fig. 2 is a fragmentary sectional view taken along the line 2-2 of Fig. 1.

Flg. 3 is a diagrammatic side elevation show ng a mechanism embodying my invention in connection with an internal combustion engine.

Referring to the drawings, '1 represents as a whole the main body casting of the mechanism. It is made up of three principal parts, namely, the float chamber 2, the float chamber 3 and the central receiving or valve chamber 4. At 5 and 6, there are provided atomizing chambers which communicate withthe main central chamber 4;. 7 represents the main cover casting which is secured to the casting 1 by means of suitable bolts or screws.

The two mechanisms at opposite sides of the central valve chamber 4 are similar and a detailed description of one of them will be suflicient.

8 represents a pipe for delivering fuel to the float chamber. The flow of fuel through this pipe is regulated by the needle valve 9 which is controlled by means of the float 10 connected to the valve by the lever 11. The lever 11 is pivoted at 12 to the small bracket casting 13 which is secured to the main frame casting 1. At its inner end the lever 11 is forked to engage and support the valve 9 and at its other end it is apertured to receive the stem 14 upon which the float 10 is mounted. It will be clear that as the float moves downward, the lever 11 will act to lift the valve and open the passage through the pipe 8. WVhen the float moves upward, the valve will be permitted to move downward to close the passage through the pipe 8. In this way the float acts automatically to control the valve to maintain the liquid level in the chamber 2 substantially constant.

At the upper end of the valve 9 there is formed a tube 15 which telescopically engages a smaller tube 16 which is rigidly secured to the bottom wall of the atomizing chamber. The lower end of the tube 15 communicates with the float chamber by means of apertures. 17 and at the upper end of the tube-16 is a valve aperture 18 leading Patented Dec. 1141, 192(1 in'to the atomizing chamber. A coil spring 19 surrounds the two' tubes and tends to hold the lower tube 15 and the valve 9 in lowermost position.

The flow of fuel through the aperture 18.

into the atomizing chamber is controlled by means of the needle valve 20., This valve is slidably mounted in apertures in the top wall of the atomizing chamber and in the cover plate or casting 7. Threaded into the upper end of the stem of the valve 20 is a screw 21 having a hand wheel 22. A coil spring 23 surrounds the screw and rests upon the upper end of the valve stem servtogether by a central vertical stem. The;

chamber 4 is divided into two parts by a transverse horizontal partition 28 and this partition is provided with an aperture adapted to receive within it ,the lower valve closure 27. A main air duct 29 communicates with the space below the partition 28 and serves to supply air for the operation of the vaporizing mechanism. 30 and 31 are separate air supply ducts leading directly to the respective vaporizing chambers 5 and 6. These ducts 30 and 31 are always open.

At the top of the chamber 4 there is a seat 32 for the upper valve closure 26. When the closure 26 is in engagement with the seat 32, all communication from the atomizing chambers 5 and 6 to the engine is cut off except that through the small aperture in the valve. It will be observed that the relationship of the two valve closures to the valve seat 32 and to the partition 28 is such that when the valve device as a whole is lifted, the closure 26 first moves off from its seat to establish communication from the atomizing chambers to the engine, and, upon further movement, the closure 27 takes a position such that supplemental air can pass directly from the main air duct 29 into the duct leading from the atomizing chambers to the engine. This duct is indicated in the drawings by 33. At 34 there is a dash pot mechanism connected with the valve device 25, this mechanism serving to prevent too rapid movement of the valve device.

It will be understood that the valve device 25 is automatically controlled by the suction of the engine. When the engine is first rotated at a slow speed, the vah'e device is moved upward through only a short distance and gases are admitted from the atomizing chamber without supplemental air being admitted directly from the main air duct. However, as the engine suction increases, the valve device is moved through a greater distance and supplemental air is admitted. Provision is made for regulating the positions of the needle valves 20 as the engine suction varies. Each valve stem is slotted and through the slot there extends a lever 34 which is pivoted at its outer end to a movable bar 35 and engages at its inner end With-the valve device 25. By moving the bar 35 the pivot point of the lever 34 can be adjusted. The bar 35 can be located in adjusted position by means of the screw 36. The lower end of the screw 21 rests upon the lever 34 and in this way the vertical movement of the lever with the valve device 25 is transmitted to the valve 20. Obviously, by

turning the screw 21 the relative position of atomlzing chamber is entirely out off.

While the closure 27 is being received within the aperture, the upper closure 26 becomes seated at 32, the lower valve closure entering the aperture 28 enough to practically close it a little before the closure 26 becomes seated. In the upper movement of the valve device 25, accordingly, the closure 26 opens a little before the closure 27 gets out of the aperture.

40 is a manually controllable throttle valve mounted in the engine supply duct 33.

In Fig. 3 I have indicated diagrammatically an internal combustion engine having attached to it an atomizing mechanism embodying my invention. In the construction shown 41 indicates the engine as a whole and 42 indicates the engine manifold to which is connected the supply duct 33. 43 indicates the piping for the cooling water. For supplying water to the kerosene side of the atomizing mechanism I provide a pipe 44 which extends downward from the cooling water system and enters the carbureter mechanism at 45. At 46 is a valve for controlling the fiow of water through the pipe 44. It will be understood that the parts on the left hand side of the mechanism, as shown in the drawings, are intended to be used for kerosene, and the parts on the understood from the foregoing description of the construction, and a description in detail of the operation will be unnecessary. It is to be noted, however, that the operator in starting the engine will first throw the valve 37 to such a position as to connect the gasoleneatomizing chamber 6 with the engine supply duct 33. The eiigine will then be started in the usual way using gasolene as a fuel. Later, after the engine is in satisfactory operation and is at normal working temperature, the operator will throw the valve 37 to disconnect the gasolene atomizing chamber 6 and to connect the kerosene atomizing chamber 5. At the same time the flow of water through the pipe 44 will be started. Kerosene vapor will then be drawn into the engine and this vapor will be moistened by the water or water vapor admitted through the pipe 44:.

What I claim is 2- 1. In a' fuel vaporizing apparatus for an internal combustion engine, the combination of two float chambers, separate means for supplying fuel to the float chambers, two vaporizing chambers, valve devices for regulating the flow of fuel from the respective float chambers to the respective vaporizing chambers, a common central valve chamber with which either vaporizing-chamber may communicate, valve mechanism for connecting either vaporizing chamber with the central chamber and disconnecting the other, and a single automatically acting suction controlled valve for regulating the flow of l gases out of the said central chamber.

2. In a fuel vaporizing apparatus for an internal combustion engine, the combination of two float chambers, separate means for supplying fuel to the float chambers, two vaporizing chambers, valve devices for regulating the flow of fuel from the respective float chambers to the respective vaporizing chambers, a common central valve chamber With which either vaporizing chamber may communicate, valve mechanism for connecting either vaporizing chamber with the central chamber and disconnecting the other, a

, single automatically acting suction controlled valve for regulating the flow of gases out of the said central chamber, and means for connecting the first of said valve devices with the said single suction controlled valve,

whereby the flow of fuel into the vaporizing chambers is varied with the suction.

3. In a fuel vaporizing apparatus for an internal combustion engine, the combination of two float chambers, separate means for supplying fuel to the float chambers, two vaporizing chambers, valve devices for regulating the flow of fuel from the respective float chambers to the respective vaporizing chambers, a common central valve chamber with which either vaporizing chamber may communicate, valve mechanism for connectsupplying fuel to the float chambers, two

vaporizing chambers, valve devices for regulating the flow of fuel from the respective float chambers to the respective vaporizing chambers, a common central valve chamber with which either vaporizing chamber mav communicate, valve mechanism for connecting either vaporizing chamber with the cen- .tral chamber and disconnecting the other,

a single automatically acting suction con trolled valve for regulating the flow of gases out of the said central chamber, means for connecting the first of said valve devices With the said single suction controlled valve, whereby the flow of fuel into the vaporizing chambers is varied with the suction, and a valve connected with the said suction controlled valve for admitting a supplemental supply of air directly into the common central chamber when the suction exceeds a certain amount.

5. In a fuel vaporizing apparatus for an internal combustion engine, the combination of two float chambers, separate means for supplying fuel to the float chambers, two vaporizing chambers, valve devices for regu lating the flow of fuel from the respective float chambers to the respective vaporizing chambers, a common central valve chamber with which either vaporizing chamber may communicate, a hollow cylindrical valve mounted in the central valve chamber to oscillate about a vertical axis to connect either vaporizing chamber with the central chamber and disconnect the other, and a single automatically acting suction con trolled valve for regulating the flow of gases out of the said central chamber.

6. In a device of the class described, a mixing chamber, a plurality of float chambers, needle valves to control the flow therefrom, passages leading from said needle valves into the mixing chamber, means cutting off communication between either one of the passages leading from said needle valves and said mixing chamber, valves for controlling the flow of mixture from said mixing chamber, and connections between one of said valves and said needle valves to operate the latter independently of one another and siof said means.

7. In a device of the class described, a mixing chamber, a plurality of float feed chambers connected therewith, supply pipes connected therewith for different hydrocarbon fuels, a valve in the mixin chamber, a rotatable element mounted within the mixing chamber adapted to permit communication between said mixing chamber and said respective float feed chambers, and affording a seat for said valve, and means governing the flow from said float feed chambers.

8. In a device of the class described, amixing chamber, puppet valves controlling the inlet and outlet thereto, a plurality of float chambers adapted to communicate with said mixing chamber, needle valves interposed between said float feed chambers and said mixing chamber, connections for operating said needle valves from said puppetvalves, and a throttle valve in the outlet of the carbureter beyond said mixing chamber to govern the flow of mixture therethrough.

9. In a carbureter of the class described, a plurality of float feed chambers, a common mixing chamber therefor, a rotatable element for establishing communication between any of said float feed chambers and said mixing chamber, and means introducing water vapor into said mixing chamber when certain of said floatchambers are in communication with said mixing chamber.

10. In a device of the class described, a mixing chamber, a plurality of float chambers connected therewith, a plurality of needle valve hydro-carbon chambers, needle valves therein, connected valves in said mixing chamber adapted to be operated by the draft of the engine, levers adapted to open said needle valves when said puppet valves are opened, and means varying the leverage on said needle valves to vary the movement thereof with the opening of said puppet valves.

11. In a device of the class described, a mixing chamber, an inlet and an outlet valve for said mixing chamber, a plurality of supply means for diflerent hydro-carbon fuels, and unitary mechanism movable within the mixing chamber affording seats for said valves and permitting admission of one of said hydro-carbon fuels from one of said means, and simultaneously cutting off communication between said mixing chamber and the other of said hydro-carbon fuel supply means,

12. In acarbureter of the class described, a mixing chamber, a plurality of fuel inlets for admitting fuel thereto, means closing communication between said mixing chamber and either one of said fuel inlets, a plurality of float chambers, one for each fuel inlet to admit different hydro-carbon fuels thereto, connected puppet valves within said mixing chamber, connections between the same and said fuel inlet valves to operate the same, and a throttle valve controlling the flow of mixture from the carbureter.

13. In a device of the class described, a mixing chamber, a plurality of fuel feed valves therefor, each connected to a different source of diflerent hydro-carbons, automatically operating inlet and outlet means for said mixing chamber, and connections between said means and said respective hydrocarbon fuel feed valves to aflord a proportionate opening of the latter with the opening of said inlet and outlet means.

14. In a device of'the class described, a mixing chamber, inlet mechanism adapted to feed different hydro-carbons thereto, means confining the admission thereto of fuel from one of said hydro-carbon fuel feed mechanisms, and inlet and outlet means in said mixing chamber connected to operate both of said fuel feed mechanisms.

15. In a device of the class described, a plurality of sources of different hydro-carbon fuels, independent air inlets for each of said fuels, mechanism governing the flow of fuel from said sources, and automatically acting means for controlling the flow of the mixture and actuating the controlling hydrocarbon mechanism.

16. In a" device of the class described, a

casing, a plurality of fuel valves mounted therein adapted to introduce different hydro-carbon fuels, a mixing chamber, passages communicating, into said mixing chamber from each of said fuel valves,

.means opening and closing communication between said passages and said mixing chamber, a throttle valve on said casing, and a puppet valve mouted intermediate said means and said throttle valve.

17. In a carbureter of the class described, a mixing chamber, a plurality of float chambers associated therewith, needle valves, one for each of said float chambers for admitting fuel into the mixing chamber, a rota table ported valve adapted to close communication between said mixing chamber and either one of said needle valves, an automatically acting valve within the mixing chamber operatively connected. with said needle valves to operate the same different or like, amounts simultaneously, and means controlling the flow of mixture from the carbureter.

18. In a device of the class described, a mixing chamber, an air intake passage there beneath, a plurality of float feed chambers for different hydro-carbons, needle valves connecting the same with said mixing chamber, a rotatable ported element mounted in the mixing chamber permitting communication between the respective needle valves and said mixing chamber, connected puppet valves in said mixing chamber adapted to 1,se2,sse

seat on said element, and dash-pot mechanism connected with said puppet valves.

19. In a carbureter of the class described, a mixing chamber, a plurality of fuel supply valves each connected to a different source of hydro-carbon fuel, automatically operating connected inlet and outlet means for said mixing chamber, connections between said means and said respective fuel valves to insure opening of the latter with movement of said means, mechanism permitting independent adjustment of said fuel valves with respect to said mechanism, and means opening and closing communication between said fuel valves and said mixing chamber independently of the fuel valves.

20. In a device of the class described for carbureting air alternatively with any one of a plurality of hydro-carbons, a plurality of independent fuel valves for controlling the flow of hydro-carbons, passages formed within said device for conducting the hydro-carbon mixture from each of said respective fuel valves toward the outlet of the device, mechanism mounted within the carbureting device operating simultaneously by a single adjusting movement to cut off communication between one of said passages and the outlet of the device, and open communication between the other of said passages and the outlet of the device, automatic means mounted within the device operating according to the draft through the device, and operative adjustable connections between said means and said respective fuel valves.

21. In a carbureter of the class described a plurality of float chambers for diflerent hydro-carbon fuels, a common mixing chamber, a plurality of fuel inlets, one for each of said float chambers, a valve within the mixing chamber, connections between the same and said fuel inlets to operate the same simultaneously, means adjusting said connections to effect different proportionate openings of said fuel inlets for given movement of said valve, rotatable means by a single adjustment controlling the draft exerted on both of said fuel inlets and unitary means controlling the flow of mixture from the carbureter.

22. In a carbureter, regulable fuel supply mechanism for different hydro-carbons, normally open inlet air ports, one for each of said mechanisms, a common mixing chamber for either one of said fuels, cooperative inlet and outlet means for said mixing chamber adapted to actuate said fuel supply mechanisms and mechanism controlling the flow from said fuel supply mechanisms into the mixing chamber of the carbureter.

In testimony whereof, I afiix my signature in presence of two witnesses.

WILLIAM J. BRANDON.

-Witnesses G. L. AVERY, CON 0. FLYNN. 

